Natural process = starting point + materials + stages + movement/transformation + cause-and-effect relationships + final result. The diagram illustrates the natural process by which stalactites form on the roof of a cave., Starting point: the ground surface. Materials: water, limestone and calcium carbonate. Main transformation: dissolved calcium carbonate → calcite deposits → soda straw → stalactite. Final result: a stalactite hanging from the cave roof., Natural process = starting point + materials/elements + stages + movement/transformation + cause-and-effect relationships + final result. The principal elements are the surface, limestone rock, cracks and holes, water, calcium carbonate, the cave roof, calcite deposits, a soda straw and a blockage of stone or soil., surface, limestone rock, cracks and holes, water, calcium carbonate, cave roof, calcite deposits, soda straw, stone or soil, Natural process = starting point + materials/elements + stages + movement/transformation + cause-and-effect relationships + final result. Water moves downwards from the surface through cracks and holes in the limestone. As it passes through the rock, it absorbs calcium carbonate. The resulting solution reaches the cave roof and forms drops., water seeps through the limestone → absorbs calcium carbonate → forms a mineral solution → reaches the cave roof → forms drops, Natural process = starting point + materials/elements + stages + movement/transformation + cause-and-effect relationships + final result. Because water absorbs calcium carbonate while passing through limestone, it carries dissolved minerals into the cave. When drops form on the cave roof, calcite is deposited. Continued deposition causes a hollow soda straw to develop., water passes through limestone → calcium carbonate dissolves → mineral-rich drops form → calcite is deposited → a soda straw develops, Natural process = starting point + materials/elements + stages + movement/transformation + cause-and-effect process + final result. Initially, water seeps through cracks and holes in the limestone and absorbs calcium carbonate. When the solution reaches the cave, drops form on the roof. A ring-shaped calcite deposit is then left behind., A. Water seeps through the limestone. B. It absorbs calcium carbonate. C. Drops of solution form on the cave roof. D. A ring-shaped calcite deposit develops., Natural process = starting point + materials/elements + stages + movement/transformation + cause-and-effect relationships + final result. As calcite continues to accumulate, the ring-shaped deposit develops into a hollow soda straw. If the straw becomes blocked by stone or soil, the solution flows down its outer surface. Further calcite deposits gradually form a stalactite around the straw., ring-shaped calcite deposit → hollow soda straw → straw becomes blocked → solution flows around the outside → calcite accumulates → stalactite forms

WR2Ac_Natural_Process_Analysis

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